chevy 350 swirl ports and roller rocker arms

OHEARN.2012 · April 04, 2011, 03:27:53 AM

ok so im doing a 355 tbi build and i picked up my head block etc yesterday and i found out that my heads wfi swirl port head 1.94 intake/1.5001 exhaust

i just wondered if these heads are any good?

also wondered if runnin roller rocker arms would do much good i know they reduce friction between rocker and spring but are they worth it on these heads?

Kyle · April 04, 2011, 03:31:35 AM

they are good for low end torque

Kyle · April 04, 2011, 03:32:47 AM

Quote from: Trent on April 04, 2011, 03:31:24 AM
swirl port? never heard of that before exept for in aftermarket heads

they are the stock tbi heads

OHEARN.2012 · April 04, 2011, 03:33:00 AM

http://www.73-87.com/chevy_ids/sbheads.htm

heres a link to the website i used to decode

and this is the code14102191

OHEARN.2012 · April 04, 2011, 03:33:26 AM

ok thats good to know thats more wat im going for

Kyle · April 04, 2011, 03:36:12 AM

and i would run roller tips, not full rollers. full rollers are mainly for the high lift and high revs motors. but stamped ones should do ya just fine if ya wanted to save some cash

OHEARN.2012 · April 04, 2011, 03:37:44 AM

ok yea im not runnin anything huge so stamped itd be

OHEARN.2012 · April 04, 2011, 03:41:30 AM

who knows wat ill do first things first is head and block crank rods pistons all getting sent out to machine shop for magnafluxing and complete cleaning heads need going threw before anything they came off a block that sent 2 rods threw the block

Kyle · April 04, 2011, 03:49:26 AM

can always upgrade the rockers down the road too. theyre easy enough to get to and the only issue with em is just resetting the valve lash with the new ones. still not that hard. the money would be better spent in other places IMO

OHEARN.2012 · April 04, 2011, 03:53:55 AM

wats some of your guys opinions on wat to get etc??

Disturban · April 04, 2011, 04:11:10 AM

Quote from: OHEARN.2012 on April 04, 2011, 03:53:55 AM
wats some of your guys opinions on wat to get etc??

Stock rockers...your motor will never see enough rpm to benefit from roller rockers. Save that money for machine work, get heads mild ported, friggin mirror like polish job and gasket matched to your intake, also have intake gasket matched.

I did all mine for free because I worked in a factory that had a machine shop...if you have to pay for the work I would guess a reasonable price would be $500.

You cannot port the

out of these heads or you will actually ruin the flow and the swirl port effect and lose a lot of bottom end TQ...that is why I said mild port.

You will get your biggest gains from gasket matching both the heads and intake, the polish will help prevent carbon build up effecting flow in the future and will help with the flow in general.

You are going through a lot of

trying to build this motor, you should have just bought my suburban and swapped motors and re sold the suburban

OHEARN.2012 · April 04, 2011, 04:23:51 AM

lol ill prolly keep it stock idk i gotta go round to some engine shops and find a good one.

when did u sell burban?

Disturban · April 04, 2011, 04:35:27 AM

Quote from: OHEARN.2012 on April 04, 2011, 04:23:51 AM
lol ill prolly keep it stock idk i gotta go round to some engine shops and find a good one.

when did u sell burban?

Oh like 3 months ago...going to get another truck soon. Right now I am having too much fun souping up my wifes Bravada

OHEARN.2012 · April 04, 2011, 05:37:39 AM

haha